Happy birthday to bitcoin

1. The concept of bitcoin was first proposed by Nakamoto on November 1, 2008, and was officially born on January 3, 2009. According to the idea of Nakamoto, the open source software is designed and released, and the P2P network on it is constructed. Bitcoin is a virtual encrypted digital currency in the form of P2P. Point to point transmission means a decentralized payment system
unlike all currencies, bitcoin does not rely on a specific currency institution to issue. It is generated by a large number of calculations based on a specific algorithm. Bitcoin economy uses a distributed database composed of many nodes in the whole P2P network to confirm and record all transactions, and uses cryptography design to ensure the security of all aspects of currency circulation. The decentralized nature and algorithm of P2P can ensure that it is impossible to artificially manipulate the value of bitcoin through mass proction. The design based on cryptography can make bitcoin only be transferred or paid by the real owner. This also ensures the anonymity of money ownership and circulation transactions. The biggest difference between bitcoin and other virtual currencies is that the total amount of bitcoin is very limited and it has a strong scarcity

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2. Today (January 3) is bitcoin's "birthday"; It was on January 3, 2009, nine years ago that the "Genesis block" was born in the bitcoin blockchain network, that is, the groundbreaking block # 0, "Block 0".

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Call the police. If you receive a similar e-mail, you can directly pull the sender into the blacklist, and report the e-mail, so that you will not receive such e-mail. In addition, if the e-mail box can, you can set a receiving rule, set sensitive words, and then do not accept such e-mail, which can help to avoid such e-mail. Do not click any link above to avoid being stolen

if the threat of extortion is violence, the perpetrator claims that it will be carried out in the future; The threat of kidnapping violence was implemented at that time and on the spot. The perpetrator of the crime of extortion does not abct the victim to hide and control, while the crime of kidnapping should abct the victim to hide and control

extended information:

the constituent elements of the crime of extortion:

1. Subjective elements

this crime shows direct intention in subjective aspect, and must have the purpose of illegally extorting other people's property. If the actor does not have this purpose, or the purpose of obtaining property is not illegal, for example, the creditor uses threatening language to urge the debtor to speed up the repayment in order to repay the long overe debt, it does not constitute the crime of extortion

The object of this crime is a complex object, which not only infringes the ownership of public and private property, but also endangers the personal rights or other rights and interests of others. This is one of the distinctive characteristics of this crime which is different from larceny and fraud. The object of this crime is public and private property

4. 1. Routine management class routine management refers to the management of class activities through the formulation and implementation of rules and regulations. Rules and regulations are the code of conct that students must abide by in their study, work and life. They have the functions of management, control and ecation. Through the formulation of rules and regulations, the work of the class has rules to follow and is in order. Through the implementation of rules and regulations, students' good habits and good class atmosphere can be cultivated.

5. Wow, where's the profile